Without a rotor shaft, there cannot be an electric car: As the heart of the electric machine, it converts electrical energy into kinetic energy and transmits this into the drive train. Its design determines the speeds and torques at which an electric motor can be operated. In the development of the assembled rotor shaft from thyssenkrupp Dynamic Components, the Group was able to draw on valuable expertise from a completely different drive technology: experience with assembled camshafts from the internal combustion engine.